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No. 891,656. PATENTED JUNE 23, 1908.

H. L. BARRY.

MEANS TOR DUMPING OR DISGHARG'ING MATERIALS FROM BUGKETS.

APPLICATION FILED 0OT.12. 1907.

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MEANS FOR DUMPING OR DISGHARGING MATERIALS FROM BUGKETS.

APPLIOATION FILED 00112. 1907.

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HERBERT ALFRED LUCAS BARRY, OF WESTMINSTER, LONDON, ENGLAND.

MEANS FOR DUMPING OR DISGHARGING MATERIALS FROM BUGKETS.

Specification of Letters Patent.

Patented .Tune 23, 1908.

Application filed. October 12, 1907. Serial No. 397,230.

To all whom it may concern:

Be it known that I, HERBERT ALFRED LU- OAS BARRY, of 15 Great Georgestreet, in the city of Westminster, London, England, a subject of theKing of Great Britainand Ireland, have invented certain new and usefulImproved Means Applicable for Use in Dumping or Discharging Materialsfrom Buckets, of which the following is a specifica tion.

This invention relates to means applicable for use in dumping ordischarging materials from grab or other buckets, and consists incertain improvements in apparatus of the kind described in thespecification to Letters Patent granted to me under date the 24th June1902 No. 702912 (Re-issue No. 12267).

The objects of my present improvements are to maintain the ropes forraising and lowering the load and for traveling the carriage at such atension as to prevent the ropes becoming slack on the Winch-drums; toprovide means for varying the speed between the lifting and thetraveling of the load to enable a single chain for raising the grab orother bucket to be employed; and lastly to maintain the chain undertension and to provide against its becoming twisted.

In the accompanying drawings, Figure 1 illustrates, in side elevation, atransporter embodying my present improvements. Fig. 2 is an endelevation. Fig. 8 a vertical section on the line .ra: in Fig. 4 and Fig.4 a longitudinal section on the line 'yy in Fig. 3. Fig. 5 illustrates,in vertical section, the means for discharging the bucket, while Fig. 6is a similar view taken at right angles to Fig. 5. Fig. 7 is a view ofthe bucket corresponding with, but on a smaller scale than, Fig. 6. Fig.8 is a plan view of the die through which the lift chain passes.

According to my improved method of construction, I employ an endlessrope A which passes round a pulley a mounted on a shaft 01/ arrangedvertically in the traveling carriage B. This rope, which may be termedthe driving-rope, is actuated by the winch G which drives the rope D foroperating the carriage, and rotates the vertical shaft a, which in turndrives, by means of suitable gearing a a a horizontally disposedmainshaft 6. The driving-rope A is maintained under tension by means ofa weighted pulley a arranged as shown in Fig. 1. Upon the main-shaft bis keyed a wheel E over which the chain c for lifting the bucket Fpasses;

Weight and kept taut.

and adjacent to this wheel is mounted to rotate freely a springcontrolled drum G, the

the chain-wheel E and beneath an idle pulley 6 is connected to agathering spool 6 This spool is furnished with a drum d on which isWound one end of the rope D for moving the carriage, this rope beingmaintained in tension by means of a weight (1 arranged, as shown in Fig.1, in such a manner that, while the bucket is being raised, the weight dwill be lowered and the slack of the chain c wound upon the spool 2WVhen the bucket is lowered, the weight d will be raised and the chain apaid out against the action of the To prevent the liftchain c twistingwhile being raised or lowered, the die e is formed with a cross-shapedaperture e which engages the links of the chain e. The chain-wheel E isformed or provided with teeth 6* which engage with a toothed quadrant Z)pivotally mounted upon the frame of the carria e B and furnished with alateral projection 2 ada ted to engage one arm of a weighted lever 5This lever-arm engages with a ratchet g formed or provided on thespring-drum G; while upon the extremity of the other arm of the saidlever'is mounted a pawl 5 adapted to engage a" toothed wheel b mountedupon one of the axles of the carriage B. The lower extremity of thelift-chain e is attached to a rod e whereon is mounted a cross-head e;and connected to this cross-head is a spring-supported slide f to whichthe hook f for the bucket F is attached. Passing up through the shank ofthe hook is a plunger f upon the head of which are pivotally mounted twoarms f 3 f 3 supported upon stops f 4 f 4 formed upon the slide fSupported upon the crosshead 6 is a casing f which passes over the slidef and normally incloses the plungerarms f f 3 with their outerextremities towards each other; their pivoted endsholding the plunger inits elevated position. From the spring-drum G a rope 9 passes down to acollar 9 fitted to the lifting rope e and fur nished with chains 9 whichcarry a ring g through which the slide f and casing f 5 pass during theraising and lowering of the load, for the purpose hereinafter described.

The operation of raising, lowering and dis]- charging the bucket is asfollows :The driving rope A being set in motion by the winch C, thevertical shaft a is rotated, this in turn rotating the horizontal shaft5 and with it the chain wheel E whereby the lift-chain e is raised.Before the weight of the fully loaded bucket is taken by the chain c,the cross-head 6" will have been raised in relation to the hook f, andthe slide f pertaining to the latter drawn away from the cross-headagainst the action of the springs f f"; the several parts assuming thepositions shown in Figs. 5 and 6. The cross-head 6 will also have liftedthe casing off the slide, thus freeing the plunger-armsfif, the latterthereupon assuming an approximately horizontal position and. forcingdown the plunger f Figs. 5 and 6 illustrate the hook and itsappurtenances in the position they assume when the loaded bucket issuspended from the hook but duringthe ascent of the ,bucket, thesuspended ring g will be in advance of the hook and its ap urtenances,as shown in Fig. 1. The loader bucket is now raised together with thering 9 the rope g pertaining to the latter being wound upon the drum G,which is connected to the shaft by the spring 9 When the collar 9 hasreached the car-.

riage B the ascent of the ring g is arrested although the load continuesto rise thereupon the continued rotation of the horizontal shaft 1)operates to coil the spring 9 in the drum G about which the rope 9,whereby the ring 9 is suspended, has been wound. The casing f and thehook-slide f rise through the ring g until the plunger-arms f assume theposition shown in Figs. 5 and 6, that is to say, with the arms f abovethe ring 9 The carriage is now moved, by means of the rope D driven bythe winchv 0, along its track to the desired position for dumping, thedriving rope A being also operated by the winch to permit of thecarriage traveling. During the ascent of the load and the travel of thecarriage, the weighted. lever 6 having been actuated by the toothedquadrant b will be in the position shown in Fig. 3 and held out ofengagement with its ratchet g. The hook f and its appurtenances being inthe condition shown in Figs. 5 and 6 with the ring 9* beneath theplunger arm f the bucket is lowered, whereupon the quadrant b willassume the posi-' tion shown in dotted lines in Fig. 3, and permit theweighted end of the lever b to fall and its opposite end to rise untilthe upper extremity of the pawl b engages with the toothed wheel b thusholding the weighted lever 5 out of engagement with the ratchet g. Thering 9 having descended to the required elevation a slight backwardmovement is imparted by means of a lever c on the winch C to thecarriage B with the eifect that the pawl b is brought into the positionshown in dotted lines in Fig. 3, whereupon the weighted lever falls intoengagement with its ratchet g, sto s the rotation of the drum G andarrests tie descent of the ring 9' although the load continues todescend. The hook-slide f will now pass through the ring, and during itspassage the ring will engage the extremities of the plunger-arms andvibrate the latter against two further stops f f with the effect thatthe plunger f will be forced down upon the trigger of the bucket, thusdischarging the load. The ring, having been released from thehook-slide, is drawn upunder the influence of the springdrum; and, theloaded bucket having been discharged, the hook springs are released,whereupon the casing is forced down over the slide, and the plunger armshoused withv in the casing.

What I claim as myinvention and desire to secure by Letters Patent, is

1. In apparatus for use in raising, lowering, transportinganddischarging materials, the combination of a carriage, gearing in saidcarriage for raising and lowering the load, two endlessropes forrespectively manipulating said carriage and said gearing, and weightedpulleys suspended from said ropes whereby the latter are maintained tautdurpig 1the manipulation of the carriage and the oar 2. In apparatus forraising, lowering, transporting and discharging materials, wherein tworopes for manipulating the carriage and the load respectively areemployed, the combination, with said ropes and carriage, of raising andlowering mechanism mounted in said carriage, speed gear for driving saidmechanism, and a pulley, driven by the loadrope, for actuating the speedgear; this gear being so arranged that the speed at which the load israised and lowered may be varied in relation to the speed of travel ofthe carriage.

3. n apparatus for ralsmg, lowermg, transporting and dischargmgmaterials, the

combination, with a carriage furnished with raising and loweringmechanism, of a liftchain, one extremity of which is connected to thebucket or grab, while the op osite extremity thereof is attached to aCrum connected to the carriage rope, the latterserving, during theraising of the load, to rotate said drum and to take up the slack of theliftchain, substantially as herein described.

4. In apparatus for raising, lowering, transporting and dischargingmaterials, of the type wherein two ropes'for manipulating the carriageand the load respectively are employed, providing the carriage with adie through which the lift-chain passes to the hoisting gear and wherebytwisting of said chain is prevented.

5. In apparatus for raising, lowering and discharging materials, theherein described means for discharging the load, comprising a slidesupported upon s rings sus ended from the lower extremlty o" the lift-cain, a hook attached to said slide, a plunger passing through the shankof said hook, arms pivotally mounted upon the head of said plunger, acap or cover adapted to pass over said slide and plunger arms, and aring arranged concentrically with said lift-chain and suspended from aspring-drum, the ring serving,- during the lowering of the load, to oerate the plunger arms and force down the p unger to release the triggerfrom the bucket, substantially as set forth.

6. For use in apparatus for raising, lowering and discharging materials,a hook attached to a slide connected by springs to a cross head adaptedto be suspended from the lower extremity of the lift-chain, a plungerpassin through the shank of said hook, arms pivota ly mounted upon thehead of said plunger, means for supporting said arms in said slide, anda cap or cover adapted to normally inclose said arms and slide.

7. In apparatus for raising, lowering, transporting and dischargingmaterials, the comblnation, with the carria e B, shaft b and means forrotating said sha t, of a toothed wheel e, toothed quadrant b, lever bpawl 6 toothed wheel b spring-drum G, ratchet g, cord g, collar g andring g*.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

HERBERT) ALFRED LUCAS BARRY. Witnesses:

HENRY PARKHURST, GILBERT MITCHELL.

